Leak annunciator unit
United States Patent 3016525
US Patent References:
Electronic grounding apparatus
- - 2611862
Electric signal for trackless trolley coaches
- - 2658191
/2735089.html
- - 2735089
Photo device amplifier circuit
- - 2745021
Generator control and protective system
- - 2885568
Electronic grounding apparatus
- - 2611862
Electric signal for trackless trolley coaches
- - 2658191
/2735089.html
- - 2735089
Photo device amplifier circuit
- - 2745021
Generator control and protective system
- - 2885568
Inventors:
Hauck, Jon F.
Publication Date:
01/09/1962
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Export Citation:
Assignee:
ALLIS CHALMERS MFG CO
Primary Class:
Other Classes:
340/524, 361/178, 340/605
International Classes:
G01M3/40; G08B21/20; G08B23/00; G01M3/00; G08B21/00
US Patent References:
| 2939052 | Automatic headlight dimmer system |